Did Bartholomew Kuma plan to send all of the crew members to different places or is it just a coincidence that he helped all of them in different ways?
Kuma definitively knew what he did. Otherwise Zoro wouldn't have landed on Mihawk's island.
Also, I found this:
Sentomaru reveals that Kuma has the ability to make people fly through the sky to far away places. A Monster Chopper runs wild, trying to attack Sentomaru. Rayleigh is still seen dueling Kizaru, using swords while Nami reflects on Kuma's ability, where it was first shown at Thriller Bark.
Kuma Attacking Pacifista Kuma intercepting a Pacifista. She remembers that Perona mysteriously vanished. Luffy asks Sentomaru where Zoro could have gone, and Sentomaru says that anyone that gets touched by Kuma's paws would sail through three days and three nights and the destination would only be known by Kuma. An outraged Sanji gets ready to battle Kuma, while PX-1 tries to attack Usopp from behind, using a beam attack. Kuma then uses his Devil Fruit ability to send PX-1 away, which enraged Sentomaru.
source: One Piece Wikia